Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys
Ice-core chemistry data from Victoria Lower Glacier, Antarctica, suggest, at least for the last 50 years, a direct influence of solar activity variations on the McMurdo Dry Valleys (MDV) climate system via controls on air-mass input from two competing environments: the East Antarctic ice sheet and t...
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Online Access: | https://digitalcommons.library.umaine.edu/ers_facpub/141 https://doi.org/10.3189/172756405781813203 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1140/viewcontent/mayewski_41_52_56.pdf |
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1140 2024-09-15T17:47:57+00:00 Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys Bertler, Nancy A.N. Mayewski, Paul Andrew Sneed, Sharon B. Naish, Tim R. Morgenstern, Uwe Barrett, Peter J. 2005-01-01T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/141 https://doi.org/10.3189/172756405781813203 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1140/viewcontent/mayewski_41_52_56.pdf unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/141 doi:10.3189/172756405781813203 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1140/viewcontent/mayewski_41_52_56.pdf This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). Earth Science Faculty Scholarship Earth Sciences text 2005 ftmaineuniv https://doi.org/10.3189/172756405781813203 2024-07-24T05:38:40Z Ice-core chemistry data from Victoria Lower Glacier, Antarctica, suggest, at least for the last 50 years, a direct influence of solar activity variations on the McMurdo Dry Valleys (MDV) climate system via controls on air-mass input from two competing environments: the East Antarctic ice sheet and the Ross Sea. During periods of increased solar activity, when total solar irradiance is relatively high, the MDV climate system appears to be dominated by air masses originating from the Ross Sea, leading to higher aerosol deposition. During reduced solar activity, the Antarctic interior seems to be the dominant air-mass source, leading to lower aerosol concentration in the ice-core record. We propose that the sensitivity of the MDV to variations in solar irradiance is caused by strong albedo differences between the ice-free MDV and the ice sheet. Text Antarc* Antarctic Antarctica ice core Ice Sheet McMurdo Dry Valleys Ross Sea The University of Maine: DigitalCommons@UMaine Annals of Glaciology 41 52 56 |
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The University of Maine: DigitalCommons@UMaine |
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ftmaineuniv |
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unknown |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences Bertler, Nancy A.N. Mayewski, Paul Andrew Sneed, Sharon B. Naish, Tim R. Morgenstern, Uwe Barrett, Peter J. Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys |
topic_facet |
Earth Sciences |
description |
Ice-core chemistry data from Victoria Lower Glacier, Antarctica, suggest, at least for the last 50 years, a direct influence of solar activity variations on the McMurdo Dry Valleys (MDV) climate system via controls on air-mass input from two competing environments: the East Antarctic ice sheet and the Ross Sea. During periods of increased solar activity, when total solar irradiance is relatively high, the MDV climate system appears to be dominated by air masses originating from the Ross Sea, leading to higher aerosol deposition. During reduced solar activity, the Antarctic interior seems to be the dominant air-mass source, leading to lower aerosol concentration in the ice-core record. We propose that the sensitivity of the MDV to variations in solar irradiance is caused by strong albedo differences between the ice-free MDV and the ice sheet. |
format |
Text |
author |
Bertler, Nancy A.N. Mayewski, Paul Andrew Sneed, Sharon B. Naish, Tim R. Morgenstern, Uwe Barrett, Peter J. |
author_facet |
Bertler, Nancy A.N. Mayewski, Paul Andrew Sneed, Sharon B. Naish, Tim R. Morgenstern, Uwe Barrett, Peter J. |
author_sort |
Bertler, Nancy A.N. |
title |
Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys |
title_short |
Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys |
title_full |
Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys |
title_fullStr |
Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys |
title_full_unstemmed |
Solar Forcing Recorded by Aerosol Concentrations in Coastal Antarctic Glacier Ice, McMurdo Dry Valleys |
title_sort |
solar forcing recorded by aerosol concentrations in coastal antarctic glacier ice, mcmurdo dry valleys |
publisher |
DigitalCommons@UMaine |
publishDate |
2005 |
url |
https://digitalcommons.library.umaine.edu/ers_facpub/141 https://doi.org/10.3189/172756405781813203 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1140/viewcontent/mayewski_41_52_56.pdf |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet McMurdo Dry Valleys Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet McMurdo Dry Valleys Ross Sea |
op_source |
Earth Science Faculty Scholarship |
op_relation |
https://digitalcommons.library.umaine.edu/ers_facpub/141 doi:10.3189/172756405781813203 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1140/viewcontent/mayewski_41_52_56.pdf |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
op_doi |
https://doi.org/10.3189/172756405781813203 |
container_title |
Annals of Glaciology |
container_volume |
41 |
container_start_page |
52 |
op_container_end_page |
56 |
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1810497702272696320 |